Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect

Nick Hand , Graeme E. Addison , Eric Aubourg , Nick Battaglia , Elia S. Battistelli , Dmitry Bizyaev , J. Richard Bond , Howard Brewington

show 50 more authors

Jon Brinkmann Benjamin R. Brown Sudeep Das Kyle S. Dawson Mark J. Devlin Joanna Dunkley Rolando Dunner Daniel J. Eisenstein Joseph W. Fowler Megan B. Gralla Amir Hajian Mark Halpern Matt Hilton Adam D. Hincks Renee Hlozek John P. Hughes Leopoldo Infante Kent D. Irwin Arthur Kosowsky Yen-Ting Lin Elena Malanushenko Viktor Malanushenko Tobias A. Marriage Danica Marsden Felipe Menanteau Kavilan Moodley Michael D. Niemack Michael R. Nolta Daniel Oravetz Lyman A. Page Nathalie Palanque-Delabrouille Kaike Pan Erik D. Reese David J. Schlegel Donald P. Schneider Neelima Sehgal Alaina Shelden Jon Sievers Cristobal Sifon Audrey Simmons Stephanie Snedden David N. Spergel Suzanne T. Staggs Daniel S. Swetz Eric R. Switzer Hy Trac Benjamin A. Weaver Edward J. Wollack Christophe Yeche Caroline Zunckel

Authors on Pith no claims yet

classification 🌌 astro-ph.CO

keywords clustersgalaxycosmologydovicheffectevidencekinematicmicrowave

0 comments

read the original abstract

Using high-resolution microwave sky maps made by the Atacama Cosmology Telescope, we for the first time present strong evidence for motions of galaxy clusters and groups via microwave background temperature distortions due to the kinematic Sunyaev-Zel'dovich effect. Galaxy clusters are identified by their constituent luminous galaxies observed by the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. We measure the mean pairwise momentum of clusters, with a probability of the signal being due to random errors of 0.002, and the signal is consistent with the growth of cosmic structure in the standard model of cosmology.

This paper has not been read by Pith yet.

Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect

discussion (0)